Cutting or marking tool



June 28, 1932. M. c. ELDRDGE CUTTING OR MARKING TOOL Filed Oct. l1, 1950 Patented June 28, 1932 UNITED STATES PATENT OFFICE MURRAY C. ELDREDGE, 0F CHICAGO, ILLINOIS CUTTING OR MARKING TOOL Application led October 11, 1930. Serial No. 488,030.

My present invention relates to cutting or widths, these notches being for the purpose marking tools, and particularly to that type of straddling the edge of a piece of glass to of tool used for marking or cutting glass or enable the glazier to break off the edge of the like7 and has for one of its objects an imthe glass after the cut has been made. j

e proved mounting for the cutting wheel which The head l is also provided with a slot 4 d is common to this type of instrument. which communicates with the upper surface More particularly my invention has to do thereof and also with the forward tapered with the means for retaining the cutting surface 5 and vertical surface 6 as best illuswheel in place on the head of the cutting tool. trated in Figs. 2 and 3.

in In prior known devices, one of the biggest On each side of the slot a are provided objections has been that the cutting wheel was the recesses 7 which are adapted to receive the either mounted irremovably upon the cutopposite ends of the pivot 8 upon which is ting head or the means for holding the same mounted the circular cutting tool 9. It will detachably on the head was such that during be noted that the ends of the pivot 8 are slight- 15 the normal use of the cutting tool the retainly swaged in order to prevent the cutting 65 ing means might accidentally permit the eut wheel 9 from becoming disengaged from the ting wheel to become disengaged from its pivot, the cutting wheel being preferably mounting. rotatably mounted on the pivot 8 although In the present invention the cutting wheel it is entirely within the scope of this inven- I is so mounted and retained in its mounting tion to have the pivot 8 rigid with the cutting 70 that during the normal operation, the cutting wheel 9 and have the pivot turn in its bearings wheel will not become disengaged from the rather than have the cutting wheel turn on head of the cutting tool. the pivot.

More particularly my invention has for its It will be noted from an inspection of Fig. 2

object the provision of a sliding catch or slidas Well as Fig. 3 that if the forward sides of l ing retaining means for holding the cutting the recesses are closed,that the cutting wheel tool in place. will be retained within the head and prevent- @ther objects of this invention will appear ed from displacement therefrom. In order hereinafter as the description thereof proto accomplish this result I provide a retaining 3"" ceeds, the novel features and combinations member IO which slides in the recess 11 in 80 being set forth in the appended claims. the upper' surface of the head l and has the In the drawingdownwardly projecting prongs 12 which are Fig. lis an isometric view of a glass cutting adapted to lie over `the open sid-es of the tool embodying my invention; recesses 7 when the retaining member is inthe f'f Fig. 2 is an elevational view of one side of full line position shown in Fig. 2. The re- 85 the cutting tool with parts of the cutting tool taining member or sliding catch 10 is proin section for the sake of clearness; vided with a slot 14. through which a rivet I5 Fig. 3 is an isometric view of the cutting extends and this rivet is received within the tool head with the retaining catch and cutrecess 13 in the upper side of the head, the

1" ting wheel removed; rivet being held in place by friction. It will 90 Fig. 4 is an elevational view of the cutbe understood, of course, that if I so desire,A ting wheel adapted to be mounted on the cut- I may use a screw in place of the rivet l5, ting head; and and in that event the recess 13 will be a ta- Fig. 5 is an isometric view of the sliding pered opening into which the screw is 4" catch used to hold the cutting wheel in place threaded. 95 on the head. The recess 1l is of substantially uniform Referring now to the drawing7 it will be depth except at one end thereof. `This end7 noted that the cutting tool comprises a head which is the right-hand end shown in Fig. 2, l and a handle portion 27 the former being is slightlyfcurved or sloping as at 1G so that 'm provided with the notches 3 of varying as the sliding catch is broughtv into its full 10o line position shown in Fig. 2 by means of thc operating piece 17, an upward thrust will be imparted to the sliding catch thereby causing additional friction between the head of the 5 rivet 15 and the upper surface of the sliding catch 17. Vith this arrangement it will be seen that Whenthe catch 17'is in the position shown in full lines in Fig. 2, an additional frictional means prevents accidentaldisplacement of the sliding catch although the sliding catch has a. relatively free sliding movement during most of the extent of-l its travel.

As will be noted in Fig. 2, the projectionsr12Wliichcover the open sides of the recesses 7 lie. substantially fiushwiththesurface 6, and that the upper side of the sliding catch 10 is' substantially Hush with the upper surface ofl theA head, Sincey the projections- 12y are 2 flush: vviththesurface 6 when in operative tion during 'the use ofthe tool.

3 van'yoffthe surfaces of the cutting lhead except tli'efsurfacej and 'the surfacesof'the slot 4. Therefore ,endwise displacementof the pivot 8 when in 'the recesses i's prevented, y

` In 'the normal operation of the lcut-'ting tool, thei'fo'rcezis usually 'a'pl'oli'edinsuch manner thattlie (pivot 8 lis forced against one of the rigid walls Vof each of the recesses 7 and no strain. isv placed upon the sliding` n catch, the sliding catch merely .preventing the accidental-displacement ofthe cutting wheel and preventing its falling outofthe slot under the force ofg'ravit'y,

i Tt will be borne -inm'i'nd that one of the important Y'features Ao f-this invention is the provision .ofrecesses for retaining `the pivotin place, the frigid Walls of which prevent movement 'ofjthe pivot during lthe 'normal operation of the device,

Y Obviously other changesinay be made in the construction andarrangement of the variouspar'tsvvithout departing from the spirit of Ithis invention or thesconeof the appended Claims,

' Having thus Vfully described tWoembodiments Iof my invention, vwhat VI desire to securefbyLetter Patent of the United States is: l.. fIn acuttingtool, the combination of a headlhavinga slotftherein, open sided recesses having 'theirbpen sides communicating with one face of said head, a cuttingztoohl 'a pintle ,on whiohsa-id tool is (mounted, vsaid recesses being adapted fto receive said pintle, alocklgwmemb Sldlblymounted @another face Ofsid'h'ad and'havleelmearssldablethere- 5 'with 'in' a'direction at a' substantial angle to said first face for covering the open sides of said slot when said locking member is in one position of adjustment.

2. A cutting tool comprising a head having a slot for receiving a pintle, a cutting Wheel mounted on said pintle, a groove in said head, a member separate from said pintle slidable in said groove and guided thereby having means thereon adapted to overlie said pintle and prevent removal of. said pintle from said slot, and means for retaining said member in said last mentioned position comprising means for increasing the frictional resistance offeredto the movement of said slidable member at the operative pintle retaining position of said member.

3. In a cutting tool, the combination With a member having a head portion, a handle portion integral with said head portion, said head portion having a slot therein communieating With the end face of said head and also with an adjacent face, recesses in said head portion communicating with said slot and said first mentioned face, a pintle in said recesses and extending across said slot, a cutting Wheel mounted on said pintle, and mea-ns slidable in a direction perpendicular to said first face for retaining said pintle in said recesses, said retaining means comprising a member slidable in a direction transversely to the axis ofsaid pintle and having a portion thereof adapted to lie over said pintle to retain said pintle in said recesses.

4. A.- glass cutting tool comprising a member having a bifurcated end, recesses in each portion of 'said bifurcated end in alinement With Yeachother and communicating with the sameouter face of said member so as to rc- Ac'eive a pintle, a pintle having a cutting Wheel thereon, removably mounted in said recesses With the said Wheel lying in the space between the portions of said bifurcated ends, and a member slidably mounted on said first mentioned member in a direction transversely to said pintle 'and at a substantial angle to said face having projections thereon adapted to overlie said recesses to prevent removal of said pintle, but being movable to a position away from said recesses While remaining opposed thereto to permit simultaneous bodily removal of said pintle and Wheel.

5. A glass cutting tool comprising ahead having a pintle receiving recess closed at the ends thereof to prevent endivise displacement of a pintle placed thereon but being open at the side to receive said pintle, said head having a slot therein cutting said recess transversely and. communicating with the portions thereof, a pintle removably mounted in said recess, a cutting Wheel on said pintle adapted to revolve in said slot, and a slidable member slidable bodily ina direction at a substantial angle to said side for closingI the side of said recess throughwhich said pintle is adapted to be received.

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6. A glass cutting tool comprising a head having a pintle receiving recess closed at the end thereof to prevent endwise displacement of a pintle placed thereon but being open at the side to receive said pintle, said head having a slot therein cutting said recess transversely and communicating with the portions thereof, a pintle removably mounted in said recess, a cut-ting wheel on said pintle adapted to revolve in said slot, and a slidable member separate from said pintle for closing the side of said recess through which said pintle is adapted to be received, said slidable member being slidable on a face of said head other than the face with which said recess communicates and having projections overlying said open side of said recess when said slidable member is in one position of adjustment.

7. In a cutting tool, the combination with a member comprising a head and a handle, a groove in one face of said head, a catch slidable in said groove, a headed member for retaining said catch in said groove, a slot in said head for receiving a cutting tool, open sided bearings for receiving a pintle, a pintle removably mounted in said bearings but prevented from endwise displacement therein, and extensions on said catch for covering the open sides of said bearings to retain said pintle therein, said cutting tool being mounted on said pivot.

8. In a cutting tool, the combination with a head, a slot in said head adapted to rotatably receive a cutting wheel, recesses in said head communicating with said slot and with one outer surface of said head, a pivot, a cutting wheel mounted on said pivot, said pivot and cutting whee-l being simultaneously movable into said recesses and slot respectively, said pivot being movable into said recesses through the sides thereof which communicate with said face, a member .separate from said pivot slidably mounted on said head elsewhere than on said face and being movable in a direction substantially parallel to the direction in which said pivotl is moved when being inserted into said recesses, retaining means on said slidable member adapted to over-lie said pivot on the side thereof toward said face when said slidable member is in one position, said slidable member being movable to another position to free said pivot from said recesses.

9. A device as claimed in claim 8 in which the slidable member has a friction retaining means operable to increase the frictional resistance to slidable movement of said slidable member as said slidable member is moved into a position such that the retaining means thereon over-lies said pivot.

l0. In a cutting tool, the combination with a head, a slot communicating with one face of said head, recesses on opposite sides of .said slot communicating with said slot and with said face respectively, a member slidable on said head elsewhere than on said face, retaining means on said slidable member movable in a direction substantially to and from said face as said member slides on said head, a pivot mounted in said recesses, and a cutting wheel mounted on said pivot, said retaining means being adapted to over-lie said pivot and prevent its removal from said recesses when .said slidable member is in one position and adapted to lie a sutlicient distance away from said face in another position of adjustment of said slidable member to permit removal of said pivot from said recesses.

ll. In a cutting tool, the combination with a head, a slot communicating with one face of said head, recesses on opposite sides of said slot communicating with said slot and with said :tace respectively, a member slidable on said head elsewherethan on said face, retaining means on said slidable member movable in a direction substantially to and from said face as said member .Slides on said head, a pivot mounted in said recesses, a cutting wheel mounted on said pivot, said retaining means being adapted to over-lie said pivot and prevent its removal from said recesses when said slidable member is in one position and adapted to lie a suiiicient distance away from said face in another position of adjustment of said slidable member to permit removal of said pivot from said recesses, and friction means for retaining said slidable member in the adjusted position in which the retaining means lies over said pivot.

12. In a cutting tool, the combination with a head, a slot communicating with one face of said head, recesses on opposite sides of said slot communicating with said slot and with said face respectively, a member slidable on .said head elsewhere than on said face, retaining means on said slidable member movable in a direction substantially to and from said face as said member slides on said head, a pivot mounted in said recesses, a cutting wheel mounted on said pivot, said retaining means being adapted to over-lie .said pivot and prevent its removal Jfrom said recesses when said slidable member is in one position and adapted to lie a suiiicient distance away from said face in another position of adjustment of said slidable member to permit removal of said pivot from .said recesses, and yielding means for retaining said slidable member in the adjusted position in which the retaining means lies over said pivot.

13. In a cutting tool, the combination with a head, a slot communicating with one face of said head, recesses on opposite sides of said slot communicating with said slot and with said face respectively, a member slidable on said head elsewhere than on said face, retaining means on said slidable member movable in a direction substantially to and from said face as said member slides on said head, a pivot mounted in said recesses, a cutting wheel mounted on said pivot, said retaining means being adaptedtojover-lie said pivot and preventl its removal from said recesses when said sldable member is in one lposition and adapted to lie a suiicientdistance away from said face in another position of adjustment of .said slidable member to V'permit removal `of said pivot from said recesses, and friction means for retaining said slidable member inthe adjusted position in'whichthe retaining means lies over said pivot, said retaining, .means forming a forked extension on saidslidable member for receiving the cut ting Wheel and supporting the same by the engagement of said pivot with said forked extension' on said slidable memberto thereby facilitate the insertion of said cutting Wheel into said slot and said pivotinto said recesses. 14. Ina cutting toohthe combination with a member comprising ahead, a groove in said head, a catch slidabie in saidgro'oveymeans for retaining lsaid catch in said groove,.a slot in saidhead for receiving a cutting tool, open sided 'bearings for receiving a pintle, a pintie removably mounted'in said bearings 'but prevented from end-Wise displacement therein, and extensions on said catch for over-lying said pintle to retain said pintle in said recesses, said cuttingvtool being mounted on saidpivot.

In testimony whereof I have signed my name'to this specification on this 6th day of October A. D. 1930. .Y i

kMURRAY C. ELDREDGE.

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